body{
    overflow-y: hidden;
}
.top{
    width: 100vw;
    height: 64px;
    background-color: #319b7c;
}
.top .icon{
    width:48px;
    height:48px;
    margin-left: 16px;
    margin-right: 8px;
    margin-top: 8px;
    float: left;
    filter: invert(100%);
    -webkit-user-drag: none;
}
.top .title{
    line-height: 64px;
    color:#fff;
    font-size: 24px;
    float: left;
    padding: 0;
    margin: 0;
    user-select: none;
}
.top .datetime{
    margin: 0 0 0 16px;
    padding:0;
    line-height: 64px;
    color: white;
    float: left;
}
.top .phone{
    color: #fff;
    font-size: 18px;
    float: right;
    line-height: 64px;
    margin: 0 16px 0 0;
}
.top .exit{
    color: #fff;
    font-size: 18px;
    float: right;
    line-height: 64px;
    margin: 0 16px 0 0;
    user-select: none;
    cursor: pointer;
}
.left{
    width:240px;
    height:calc( 100vh - 112px );
    background-color: #42cba2;
    padding-top: 48px;
    float: left;
}
.left .menu{
    padding: 12px 70px 12px 70px;
    overflow-y: hidden;
    user-select: none;
}
.left .menu_selected{
    background-color: #fff3;
}
.left .menu:hover{
    background-color: #fff2;
}
.left .menu img{
    width: 24px;
    height:24px;
    float: left;
    -webkit-user-drag: none;
}
.left .menu p{
    margin: 0;
    font-size: 16px;
    float: right;
    color: #fff;
    line-height: 24px;
    user-select: none;
}
.center{
    width: calc( 100vw - 240px );
    height:calc( 100vh - 64px );
    float: right;
}
.center .top{
    background-color: #fff;
    border-color: #0002;
    border-style: solid;
    border-width: 0 0 1px 0;
    height:47px;
}
.center .center{
    border: 0;
    padding: 0;
    margin: 0;
}